A party hat-shaped object spotted on Mars has sparked fresh debate among scientists, with some suggesting it could hint at something unusual, while others say there may be a far simpler explanation.

The smell hit me first: damp brick, stagnant water, mold, and bleach. I was partway down a flight of wooden stairs that led to the basement of a 1920s duplex in east Detroit, Michigan. Leading the way ...

Imagine waiting for incoming passengers at the arrival gate at the airport. Your visual system can easily find faces and identify whether one of them is your friend's. As with other tasks that our ...